Hey, Steve. Alla wrote a great book! My work is even featured in her book. My book, of course, will be different so far as writing style and personality. And each author's different experiences in the field will bring something different also. We've both worked at very different companies (in size, culture, and continents), and we've taken different roles too. I like to think my book uses 'simpler' language to others out there — not just Alla's, but Atomic Design, for example, and other articles on the subject. It's down to earth, steeped with experience and learning experiences, and different approaches. In general, it's very practical — it gives actionable advice and steps. It's unique in that it focusses also on the role of brand in system design. The name 'Laying the Foundations' references both a simple design system model I present in the book, and also creating digital brand guidelines that design systems are built upon. This book is also 2 years further on in time (2017 > 2019) — so it uses more recent examples. I hope that helped :)